Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of the claimed design of a display screen or portion thereof with a graphical user interface according to one embodiment; and,

FIG. 2 is a front view of the claimed design of a display screen or portion thereof with a graphical user interface according to another embodiment.

The outermost broken lines in the Figures illustrate a display screen or portion thereof and form no part of the claimed design. The other broken lines in the Figures illustrate portions of the graphical user interface that form no part of the claimed design. The gray filled areas in certain Figures represent a contrast in color between the gray filled areas and the non-gray filled areas of the claimed designs. Accordingly, the gray filled areas may be one or more of a variety of colors. 

CLAIM We claim the ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 